Group is    
    ../timeit.sml
    base.sig
    stream.sml
    lrtable.sml
    join.sml
    parser2.sml
    utils.sig
    sigs.sml
    hdr.sml
    yacc.grm.sig
    yacc.grm.sml
    yacc.lex.sml
    parse.sml
    utils.sml
    grammar.sml
    core.sml
    coreutils.sml
    graph.sml
    look.sml
    lalr.sml
    mklrtable.sml
    mkprstruct.sml
    shrink.sml
    verbose.sml
    absyn.sig
    absyn.sml
    yacc.sml
    link.sml
    main.sml
